Directions

Preheat grill for indirect cooking over medium heat. Prepare brisket by placing it in a large pan and poking about 40 holes in each side with a fork. Season with garlic salt and black pepper. Pour juice from peppers on each side of the brisket. Cover pan with foil and cook indirectly for 1 1/2 to 2 hours.

Prepare BBQ sauce by bringing all ingredients to a boil in a medium saucepan over medium-low heat. Reduce heat and simmer 15-20 minutes.

On a large double layer of foil, place 1/2 the onions and 1/2 the jar of peppers. Remove brisket from grill and lay it on top of the onions and peppers. Brush brisket with 1/3 cup BBQ sauce. Top with remaining onions and peppers, wrap tightly with the foil and grill indirectly for another 1 1/2 to 2 hours. Remove from grill and unwrap. To serve, cut into thin slices against the grain. Serve with remaining sauce.